Needle-controlling means for sound-boxes.



J. P. SHINN. NEEDLE CONTROLLING MEANS FOR SOUND BOXES- APPLICATION FILED JUNE 28, 1912.

1,048,219, Patented Dec.24, 1912 JAMES P. SHINN, OF CAMDEN, NEW JERSEY.

NEEDLE-CONTROLLING MEANS FOR SOUND-BOXES.

Specification of Letters Patent.

Patented Dec. 24,1912.

Application filed June 28, 1915;. Serial No. 706,503.

To all whom it may concern Be it known that I, James P. SIIINN, a citizen of the United States, residing at Camden, in the county of Camden and State of New Jersey, have invented certain new and useful Improvements in Needle-Controlling Means for Sound-Boxes, of which the following is a specification.

My invention relates to improvements in needle controlling means for sound boxes, the object of the invention being to provide a phonographic sound box with improved means for controlling the vibration of the needle, which'means is always under the control of the operator, so that the needle may be allowed just the proper amount of vibration to insure the best possible results.

A further object is to provide an improved diaphragm having a needle arm fixed thereto and projected through a cylinder in which mechanism is provided for elastically controlling the vibration of the needle arm.

With these and other objects in view, the

' invention consists in cert. in novel features of construction, and com inations and arrangements of parts, as will be more tully hereinafter described and pointed out in the claims.

In the accompanying drawings: Figure 1v proved form of diaphragm holding gasket.

1 represents a sound box in one end of which a diaphragm 2 is located and secured against a gasket 3 preferably having a coiled wire core 17, and a needle arm 4 is fixed to the center of the diaphragm. This needle arm is bent at right angles as shown and projects through a cylinder 5 fixed to the sound-box by means of a bracket (3. In the center of the cylinder 5, a disk 7 is located, and this disk fits snugly in the cylinder and has a central opening 8 appreciably larger than the diameter of the needle arm which projects therethrough. 'On opposite sides of ter projects, and they are of a diameter ap-' preciably less than the internal diameter of the cylinder, so that they have a certain amount of lateral movement in the cylinder. The opposite ends of the cylinder 5 are internally screw-threaded to receive plugs 9 and 10, coiled springs 12 are located which exert pressure on the disks 9 and 10. A

' needle 13 is secured in a sleeve 14 on the end of the needle arm by means of a thumb screw 15, and when this needle passes, over the record illustrated at 16,it will vibrate and ary. To control this vibrating movement of the needle, my improved arrangement of disks, springs, and plugs are provided in the cylinder 5, and it-will be seen by adjusting these plugs the movement of the disks 9.and 10 on the, faces of disk 7 will be regulated. In other words, the friction of these disks one upon the other will be controlled by the position of the plugs 1], and this vibration permitted the needle may be varied in accordance with the record.

Various slight changes might be made in the general form and arrangement of parts described without departing from my invention, and hence I do not limit myself to the precise details set forth, but consider myself at liberty to make-such changes and alterations as fairly fall within the spirit and scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Let ters Patent is;

1. The combination with a sound box, a diaphragm therein, and a needle arm concured'to the sound box and through which said needle arm projects, a disk fitting the cylinder and having an opening therein larger than the heedle arm through which the latter projects, disks on opposite sides of the first-mentioned disk having openings therein fitting the arm, said last-mentioned cter of the cylinder, andmeans exerting pressure on said disks, substantially as described.

diaphragm therein, ands. needle arm connected to the 'd1aphragm,.ofa cylinder seiylinder and having an opening therein j larger than the needle arm through which "the latter projects, disks on opposite sides of cause the diaphragm to vibrate as is custom-' disks being smaller than the internal diam-.

cured to the sound box and through which. said needle arm projects, a disk fitting the 11, and between the plugs 11 and the disks nccted to the diaphragm, of a cylinder se- 2. The combination with a sound box, a

the firsbmentioned (link liming openings iherein fitting the :mn. snirl lust-mentioned disks being smaller lllHll iln: in't'ci-nnl diameter of the cylinder, said vylimlur being in ter'nally scr\\v-ihrumle l in iis ends, plugs in said ends, 211 (l cuiled springs between the plugs and the diskn. substantially as described.

Tn testimony whereof I haw signwl my name to this S]')(2Clii 2ltil0h in 11m [H'QrJ-llfl? 0i ll) twn subscribing \VliIlGSfiGS.

JAMES I". SHTNN.

\Vitnesscs Gnu. Mi SMITH, E S. VVEN'I'Z. 

